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Nicolás Rojas Acosta
Prof. Nicolás Rojas Acosta (1873–1946) was an Argentine academic and botanist. He explored the Gran Chaco in depth and was an expert in Bambusoideae and Cactaceae. Works * Rojas Acosta, N. 1918. ''Addenda ad floram regionis Chaco Australis (pars secunda)''. Bull. Acad. Int. Géogr. Bot. 26: 157–158 * Rojas Acosta, N. 1897. ''Historia natural de Corrientes : catálogo. Mineralogía, Gea Paleontología, Flora i Fauna que comprende principalmente los vejetales i animales de las provincias i territorios limítrofes. Publicación Buenos Aires : Imprenta El Hogar y la Escuela'', 1897, 214 p. * Rojas Acosta, N. 1915. ''Nociones sobre paleontología de Corrientes. Publicación .l.: E. Dupuis'', 1915 References * External links 1873 births 1946 deaths 20th-century Argentine botanists Pteridologists {{argentina-botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gran Chaco
The Gran Chaco or Dry Chaco is a sparsely populated, hot and semiarid lowland natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion of the Brazilian states of Mato Grosso and Mato Grosso do Sul, where it is connected with the Pantanal region. This land is sometimes called the Chaco Plain. Toponymy The name Chaco comes from a word in Quechua, an indigenous language from the Andes and highlands of South America. The Quechua word ''chaqu'' meaning "hunting land" comes probably from the rich variety of animal life present throughout the entire region. Geography The Gran Chaco is about 647,500 km² (250,000 sq mi) in size, though estimates differ. It is located west of the Paraguay River and east of the Andes, and is mostly an alluvial sedimentary plain shared among Paraguay, Bolivia, and Argentina. It stretches from about 17 to 33°S latitude and between 65 and 60°W longitude, though estimate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bambusoideae
Bamboos are a diverse group of evergreen perennial plant, perennial flowering plants making up the subfamily (biology), subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family. The origin of the word "bamboo" is uncertain, but it probably comes from the Dutch language, Dutch or Portuguese language, Portuguese language, which originally borrowed it from Malay language, Malay or Kannada language, Kannada. In bamboo, as in other grasses, the internodal regions of the Plant stem, stem are usually hollow and the vascular bundles in the cross-section are scattered throughout the stem instead of in a cylindrical arrangement. The dicotyledonous woody plant, woody xylem is also absent. The absence of secondary growth wood causes the stems of Monocotyledon, monocots, including the Arecaceae, palms and large bamboos, to be columnar rather than tapering. Bamboos include some of the fastest-growing plants in the world, due to a unique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cactaceae
A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Greek word (''káktos''), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. Although some species live in quite humid environments, most cacti live in habitats subject to at least some drought. Many live in extremely dry environments, even being found in the Atacama Desert, one of the driest places on Earth. Because of this, cacti show many adaptations to conserve water. For example, almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti where this vital process takes place. Most species of cacti have lost true leaves, retaining only Thorns, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1873 Births
Events January–March * January 1 ** Japan adopts the Gregorian calendar. ** The California Penal Code goes into effect. * January 17 – American Indian Wars: Modoc War: First Battle of the Stronghold – Modoc Indians defeat the United States Army. * February 11 – The Spanish Cortes deposes King Amadeus I, and proclaims the First Spanish Republic. * February 12 ** Emilio Castelar, the former foreign minister, becomes prime minister of the new Spanish Republic. ** The Coinage Act of 1873 in the United States is signed into law by President Ulysses S. Grant; coming into effect on April 1, it ends bimetallism in the U.S., and places the country on the gold standard. * February 20 ** The University of California opens its first medical school in San Francisco. ** British naval officer John Moresby discovers the site of Port Moresby, and claims the land for Britain. * March 3 – Censorship: The United States Congress enacts the Comstock Law, making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1946 Deaths
Events January * January 6 - The first general election ever in Vietnam is held. * January 7 – The Allies recognize the Austrian republic with its 1937 borders, and divide the country into four occupation zones. * January 10 ** The first meeting of the United Nations is held, at Methodist Central Hall Westminster in London. ** ''Project Diana'' bounces radar waves off the Moon, measuring the exact distance between the Earth and the Moon, and proves that communication is possible between Earth and outer space, effectively opening the Space Age. * January 11 - Enver Hoxha declares the People's Republic of Albania, with himself as prime minister. * January 16 – Charles de Gaulle resigns as head of the French provisional government. * January 17 - The United Nations Security Council holds its first session, at Church House, Westminster in London. * January 19 ** The Bell XS-1 is test flown for the first time (unpowered), with Bell's chief test pilot Jack Woolams at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
